/****************************************************************
Copyright (C) 1997-2001 Lucent Technologies
All Rights Reserved

Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of Lucent or any of its entities
not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.

LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
****************************************************************/

#include "jacpdim.h"

 static real
copeval(ps_func *f A_ASL)
{
	psb_elem *b, *be;
	expr *e;
	real t = 0.;

	for(b = f->b, be = b + f->nb; b < be; b++) {
		e = b->D.e;
		t += (*e->op)(e K_ASL);
		}
	return t;
	}

 static real
cogeval(ASL_pfgh *asl, ps_func *f)
{
	psb_elem *b, *be;
	psg_elem *g, *ge;
	expr *e;
	expr_v *V;
	linpart *L, *Le;
	real t, t1;

	V = var_e;
	t = 0.;
	for(g = f->g, ge = g + f->ng; g < ge; g++) {
		t1 = g->g0;
		if (g->nlin) {
			L = g->L;
			for(Le = L + g->nlin; L < Le; L++)
				t1 += L->fac * V[L->v.i].v;
			}
		if (g->ns) {
			b = g->E;
			for(be = b + g->ns; b < be; b++) {
				e = b->D.e;
				t1 += (*e->op)(e C_ASL);
				}
			}
		g->esum.v = t1;
		e = g->g;
		t += g->scale * (*e->op)(e C_ASL);
		}
	return t;
	}

 static void
psderprop(ASL_pfgh *asl, ps_func *f)
{
	int L;
	psb_elem *b, *be;
	psg_elem *g, *ge;
	expr *e, *ee;
	real *A, t, t1, t2;
	ograd *og;

	for(b = f->b, be = b + f->nb; b < be; b++)
		if ((L = b->D.zaplen)) {
			memset(adjoints_nv1, 0, L);
			derprop(b->D.d);
			}
	if (!f->ng)
		return;
	for(g = f->g, ge = g + f->ng; g < ge; g++) {
		e = g->g;
		ee = g->ge;
		if (e == ee) {
			t = e->dL;
			t2 = e->dL2;
			}
		else {
			t = e->dL;
			do {
				e = e->L.e;
				t *= e->dL;
				}
				while(e != ee);
			e = g->g;
			if (t != 0.) {
				t1 = ee->dL;
				t2 = ee->dL2 * (t / t1);
				for(;;) {
					ee = ee->R.e;
					t2 += (t / ee->dL) * t1 * ee->dL2;
					if (ee == e)
						break;
					t1 *= ee->dL;
					}
				}
			else
				for(L = 0, t2 = 1.;; e = e->L.e) {
					if (e->dL) {
						t2 *= e->dL;
						if (L)
							t2 *= e->dL;
						}
					else if (L++) {
						t2 = 0;
						break;
						}
					else
						t2 *= e->dL2;
					if (e == ee)
						break;
					}
			}
		g->g1 = t *= g->scale;
		g->g2 = t2 * g->scale;
		A = adjoints;
		for(og = g->og; og; og = og->next)
			A[og->varno] += t*og->coef;
		}
	}

 static void
psgcomp(ASL_pfgh *asl, ps_func *f)
{
	int n;
	ograd *og;
	psb_elem *b, *be;
	psg_elem *g, *ge;
	linpart *L, *Le;
	linarg *la, **lap, **lape, *tl;
	range *U;
	real t;
	real *A = adjoints;

	g = f->g;
	asl->P.npsgcomp++;
	for(ge = g + f->ng; g < ge; g++) {
		for(og = g->og; og; og = og->next)
			A[og->varno] = 0;
		if (g->nlin) {
			L = g->L;
			for(Le = L + g->nlin; L < Le; L++)
				A[L->v.i] = L->fac;
			}
		if (g->ns) {
			b = g->E;
			tl = 0;
			for(be = b + g->ns; b < be; b++) {
				if ((U = b->U) && (n = U->nintv)) {
					lap = U->lap;
					lape = lap + n;
					do {
						la = *lap++;
						if (!la->termno++) {
							A[la->v->a] = 0.;
							la->tnext = tl;
							tl = la;
							}
						}
						while(lap < lape);
					}
				}
			for(b = g->E; b < be; b++)
				if ((n = b->D.zaplen)) {
					memset(adjoints_nv1, 0, n);
					derprop(b->D.d);
					}
			while(tl) {
				tl->termno = 0;
				if ((t = A[tl->v->a])){
					og = tl->nz;
					do A[og->varno] += t*og->coef;
						while((og = og->next));
					}
				tl = tl->tnext;
				}
			}
		for(og = g->og; og; og = og->next)
			og->coef = A[og->varno];
		}
	}

 void
conpval_ASL(ASL *a, real *X, real *F, fint *nerror)
{
	ASL_pfgh *asl;
	Jmp_buf err_jmp0;
	cgrad *gr, **gr0;
	expr_n *en;
	expr_v *V;
	int *cm, i, j, je, *ncxval, nx, useV;
	ps_func *p, *p0;
	real *cscale, f;

	ASL_CHECK(a, ASL_read_pfgh, "conpval");
	asl = (ASL_pfgh*)a;
	if (nerror && *nerror >= 0) {
		err_jmp = &err_jmp0;
		i = setjmp(err_jmp0.jb);
		if ((*nerror = i))
			return;
		}
	want_deriv = want_derivs;
	errno = 0;	/* in case f77 set errno opening files */
	if (!asl->i.x_known)
		xp_check_ASL(asl, X);
	x0kind |= ASL_have_conval;
	je = n_conjac[1];
	j = n_conjac[0];
	if (!(gr0 = asl->i.Cgrad0))
		asl->i.Cgrad0 = gr0 = asl->i.Cgrad_;
	p0 = asl->P.cps;
	cscale = asl->i.cscale;
	useV = asl->i.vscale || asl->i.vmap;
	V = var_e;
	cm = asl->i.cmap;
	nx = a->i.nxval;
	ncxval = asl->i.ncxval;
	for(; j < je; j++) {
		i = j;
		if (cm)
			i = cm[i];
		p = p0 + i;
		if (p->nb) {
			co_index = i;
			f = copeval(p C_ASL);
			if (p->ng)
				f += cogeval(asl, p);
			}
		else if (p->ng) {
			co_index = i;
			f = cogeval(asl, p);
			}
		else {
			en = (expr_n*)con_de[i].e;
			f = en->v;
			}
		gr = gr0[i];
		if (useV)
			for(; gr; gr = gr->next)
				f += V[gr->varno].v * gr->coef;
		else
			for(; gr; gr = gr->next)
				f += X[gr->varno] * gr->coef;
		if (F) {
			if (cscale)
				f *= cscale[j];
			*F++ = f;
			}
		ncxval[i] = nx;
		}
	err_jmp = 0;
	}

 void
jacpval_ASL(ASL *a, real *X, real *G, fint *nerror)
{
	ASL_pfgh *asl;
	Jmp_buf err_jmp0;
	cgrad *gr, **gr0, *gr1;
	fint ne0;
	int *cm, i, i1, j, k, nx, *vmi, xksave;
	linarg *la, **lap, **lape;
	ograd *og;
	ps_func *p, *p0;
	psb_elem *b, *be;
	range *U;
	real *Adjoints, *cscale, t, *vscale;
	static char who[] = "jacpval";

	ASL_CHECK(a, ASL_read_pfgh, who);
	asl = (ASL_pfgh*)a;
	if (!want_derivs)
		No_derivs_ASL(who);
	ne0 = -1;
	if (nerror && (ne0 = *nerror) >= 0) {
		err_jmp = &err_jmp0;
		i = setjmp(err_jmp0.jb);
		if ((*nerror = i))
			return;
		}
	errno = 0;	/* in case f77 set errno opening files */
	if ((!asl->i.x_known && xp_check_ASL(asl,X))
	 || !(x0kind & ASL_have_conval)) {
		xksave = asl->i.x_known;
		conpval_ASL(a,X,0,nerror);
		asl->i.x_known = xksave;
		if (ne0 >= 0 && *nerror)
			return;
		}
	nx = asl->i.nxval;
	Adjoints = adjoints;
	gr0 = asl->i.Cgrad0;
	cscale = asl->i.cscale;
	vscale = asl->i.vscale;
	cm = asl->i.cmap;
	vmi = 0;
	if (asl->i.vmap)
		vmi = get_vminv_ASL(a);
	j = n_conjac[0];
	k = n_conjac[1];
	if (asl->i.Derrs)
		deriv_errchk_ASL(a, nerror, j, k-j);
	p0 = asl->P.cps;
	for(; j < k; ++j) {
		i = j;
		if (cm)
			i = cm[i];
		p = p0 + i;
		p->nxval = nx;
		if (p->ng)
			psgcomp(asl, p);
		for(gr = gr1 = gr0[i]; gr; gr = gr->next)
			Adjoints[gr->varno] = gr->coef;
		b = p->b;
		for(be = b + p->nb; b < be; b++)
			if ((U = b->U) && (i = U->nintv)) {
				lap = U->lap;
				lape = lap + i;
				do Adjoints[(*lap++)->v->a] = 0.;
					while(lap < lape);
				}
		b = p->b;
		psderprop(asl, p);
		while(b < be)
			if ((U = (b++)->U) && (i = U->nintv)) {
				lap = U->lap;
				lape = lap + i;
				while(lap < lape)
					if ((t = Adjoints[(la = *lap++)->v->a])){
						Adjoints[la->v->a] = 0;
						og = la->nz;
						do Adjoints[og->varno] +=
								t*og->coef;
							while((og = og->next));
						}
				}
		if (vscale) {
			gr = gr1;
			if (vmi)
				for(; gr; gr = gr->next) {
					i1 = gr->varno;
					Adjoints[i1] *= vscale[vmi[i1]];
					}
			else
				for(; gr; gr = gr->next) {
					i1 = gr->varno;
					Adjoints[i1] *= vscale[i1];
					}
			}
		gr = gr1;
		if (cscale)
			for(t = cscale[j]; gr; gr = gr->next)
				G[gr->goff] = t*Adjoints[gr->varno];
		else
			for(; gr; gr = gr->next)
				G[gr->goff] = Adjoints[gr->varno];
		}
	err_jmp = 0;
	}

 int
jacpdim_ASL(ASL *asl, char *stub, fint *M, fint *N, fint *NO, fint *NZ,
	fint *MXROW, fint *MXCOL, ftnlen stub_len)
{
	FILE *nl;

	nl = jac_dim_ASL(asl, stub, M, N, NO, NZ, MXROW, MXCOL, stub_len);
	if (!nl)
		return ASL_readerr_nofile;
	X0 = (real *)M1alloc(n_var*sizeof(real));
	return pfgh_read_ASL(asl, nl, ASL_findgroups | ASL_return_read_err);
	}

/******** objpval, objpgrd ********/

 static void
NNOBJ_chk(ASL *asl, int i, const char *who)
{
	ASL_CHECK(asl, ASL_read_pfgh, who);
	if (i < 0 || i >= n_obj) {
		fprintf(Stderr,
			"%s: got NOBJ = %d; expected 0 <= NOBJ < %d\n",
			who, i, n_obj);
		exit(1);
		}
	}

 real
objpval_ASL(ASL *a, int i, real *X, fint *nerror)
{
	ASL_pfgh *asl;
	Jmp_buf err_jmp0;
	expr_n *en;
	expr_v *V;
	int ij;
	ograd *gr;
	ps_func *p;
	real f;

	NNOBJ_chk(a, i, "objpval");
	asl = (ASL_pfgh*)a;
	if (nerror && *nerror >= 0) {
		err_jmp = &err_jmp0;
		ij = setjmp(err_jmp0.jb);
		if ((*nerror = ij))
			return 0.;
		}
	want_deriv = want_derivs;
	errno = 0;	/* in case f77 set errno opening files */
	if (!asl->i.x_known)
		xp_check_ASL(asl,X);
	co_index = -(i + 1);
	p = asl->P.ops + i;
	if (p->nb) {
		f = copeval(p C_ASL);
		if (p->ng)
			f += cogeval(asl, p);
		}
	else if (p->ng)
		f = cogeval(asl, p);
	else {
		en = (expr_n*)obj_de[i].e;
		f = en->v;
		}
	asl->i.noxval[i] = asl->i.nxval;
	gr = Ograd[i];
	if (asl->i.vmap || asl->i.vscale)
		for(V = var_e; gr; gr = gr->next)
			f += gr->coef * V[gr->varno].v;
	else
		for(; gr; gr = gr->next)
			f += gr->coef * X[gr->varno];
	err_jmp = 0;
	return f;
	}

 void
objpgrd_ASL(ASL *a, int i, real *X, real *G, fint *nerror)
{
	ASL_pfgh *asl;
	Jmp_buf err_jmp0;
	fint ne0;
	int ij, j, *vmi, xksave, *z;
	linarg *la;
	ograd *gr, *gr0;
	ps_func *p;
	real *Adjoints;
	real t, *vscale;
	static char who[] = "objpgrd";

	NNOBJ_chk(a, i, who);
	asl = (ASL_pfgh*)a;
	if (!want_derivs)
		No_derivs_ASL(who);
	p = asl->P.ops + i;
	ne0 = -1;
	if (nerror && (ne0 = *nerror) >= 0) {
		err_jmp = &err_jmp0;
		ij = setjmp(err_jmp0.jb);
		if ((*nerror = ij))
			return;
		}
	errno = 0;	/* in case f77 set errno opening files */
	if (!asl->i.x_known)
		xp_check_ASL(asl,X);
	if (!asl->i.noxval || asl->i.noxval[i] != asl->i.nxval) {
		xksave = asl->i.x_known;
		asl->i.x_known = 1;
		objpval_ASL(a, i, X, nerror);
		asl->i.x_known = xksave;
		if (ne0 >= 0 && *nerror)
			return;
		}
	if (asl->i.Derrs)
		deriv_errchk_ASL(a, nerror, -(i+1), 1);
	Adjoints = adjoints;
	p->nxval = asl->i.nxval;
	if (p->ng)
		psgcomp(asl, p);
	gr0 = Ograd[i];
	for(gr = gr0; gr; gr = gr->next)
		Adjoints[gr->varno] = gr->coef;
	for(la = asl->P.lalist; la; la = la->lnext)
		Adjoints[la->v->a] = 0.;
	psderprop(asl, p);
	if (!G)
		return;
	for(la = asl->P.lalist; la; la = la->lnext)
		if ((t = Adjoints[la->v->a])) {
			gr = la->nz;
			do Adjoints[gr->varno] += t*gr->coef;
				while((gr = gr->next));
			}
	if (zerograds) {	/* sparse gradients */
		z = zerograds[i];
		while((j = *z++) >= 0)
			G[j] = 0;
		}
	gr = gr0;
	vmi = 0;
	if (asl->i.vmap)
		vmi = get_vminv_ASL(a);
	if ((vscale = asl->i.vscale)) {
		if (vmi)
			for(; gr; gr = gr->next) {
				j = vmi[i = gr->varno];
				G[j] = Adjoints[i] * vscale[j];
				}
		else
			for(; gr; gr = gr->next) {
				i = gr->varno;
				G[i] = Adjoints[i] * vscale[i];
				}
		}
	else if (vmi)
		for(; gr; gr = gr->next) {
			i = gr->varno;
			G[vmi[i]] = Adjoints[i];
			}
	else
		for(; gr; gr = gr->next) {
			i = gr->varno;
			G[i] = Adjoints[i];
			}
	err_jmp = 0;
	}

 static void
INchk(ASL *asl, const char *who, int i, int ix)
{
	ASL_CHECK(asl, ASL_read_pfgh, who);
	if (i < 0 || i >= ix) {
		fprintf(Stderr, "%s: got I = %d; expected 0 <= I < %d\n",
			who, i, ix);
		exit(1);
		}
	}

 static real
cpval(ASL_pfgh *asl, int i, real *X, fint *nerror)
{
	Jmp_buf err_jmp0;
	expr_n *en;
	int L;
	ps_func *p;
	real f;

	if (nerror && *nerror >= 0) {
		err_jmp = &err_jmp0;
		L = setjmp(err_jmp0.jb);
		if ((*nerror = L))
			return 0.;
		}
	want_deriv = want_derivs;
	errno = 0;	/* in case f77 set errno opening files */
	if (!asl->i.x_known)
		xp_check_ASL(asl, X);
	if (i >= asl->i.n_con0) {
		f = 0.;
		goto done;
		}
	co_index = i;
	asl->i.ncxval[i] = asl->i.nxval;
	p = asl->P.cps + i;
	if (p->nb) {
		f = copeval(p C_ASL);
		if (p->ng)
			f += cogeval(asl, p);
		}
	else if (p->ng)
		f = cogeval(asl, p);
	else {
		en = (expr_n*)con_de[i].e;
		f = en->v;
		}
 done:
	err_jmp = 0;
	return f;
	}

 real
conpival_ASL(ASL *a, int i, real *X, fint *nerror)
{
	ASL_pfgh *asl;
	cgrad *gr;
	expr_v *V;
	real f;

	INchk(a, "conpival", i, a->i.n_con0);
	asl = (ASL_pfgh*)a;
	f = cpval(asl, i, X, nerror);
	gr = asl->i.Cgrad0[i];
	if (asl->i.vmap || asl->i.vscale)
		for(V = var_e; gr; gr = gr->next)
			f += V[gr->varno].v * gr->coef;
	else
		for(; gr; gr = gr->next)
			f += X[gr->varno] * gr->coef;
	return f;
	}

 int
lconpval(ASL *a, int i, real *X, fint *nerror)
{
	real f;

	INchk(a, "lconpival", i, a->i.n_lcon_);
	f = cpval((ASL_pfgh*)a, i + a->i.n_con0, X, nerror);
	return f != 0.;
	}

 void
conpgrd_ASL(ASL *a, int i, real *X, real *G, fint *nerror)
{
	ASL_pfgh *asl;
	Jmp_buf err_jmp0;
	cgrad *gr, *gr0;
	fint ne0;
	int i0, j, *vmi, xksave;
	linarg *la, **lap, **lape;
	ograd *og;
	ps_func *p;
	psb_elem *b, *be;
	range *U;
	real *Adjoints, t, *vscale;
	static char who[] = "conpgrd";

	INchk(a, who, i, a->i.n_con0);
	asl = (ASL_pfgh*)a;
	if (!want_derivs)
		No_derivs_ASL(who);
	ne0 = -1;
	if (nerror && (ne0 = *nerror) >= 0) {
		err_jmp = &err_jmp0;
		i0 = setjmp(err_jmp0.jb);
		if ((*nerror = i0))
			return;
		}
	errno = 0;	/* in case f77 set errno opening files */
	if (!asl->i.x_known)
		xp_check_ASL(asl, X);
	if ((!asl->i.ncxval || asl->i.ncxval[i] != asl->i.nxval)
	 && (!(x0kind & ASL_have_conval)
	     || i < n_conjac[0] || i >= n_conjac[1])) {
		xksave = asl->i.x_known;
		asl->i.x_known = 1;
		conpival_ASL(a,i,X,nerror);
		asl->i.x_known = xksave;
		if (ne0 >= 0 && *nerror)
			return;
		}
	if (asl->i.Derrs)
		deriv_errchk_ASL(a, nerror, i, 1);
	Adjoints = adjoints;
	p = asl->P.cps + i;
	p->nxval = asl->i.nxval;
	gr0 = asl->i.Cgrad0[i];
	if (p->ng)
		psgcomp(asl, p);
	for(gr = gr0; gr; gr = gr->next)
		Adjoints[gr->varno] = gr->coef;
	b = p->b;
	for(be = b + p->nb; b < be; b++)
		if ((U = b->U) && (i = U->nintv)) {
			lap = U->lap;
			lape = lap + i;
			do Adjoints[(*lap++)->v->a] = 0.;
				while(lap < lape);
			}
	b = p->b;
	psderprop(asl, p);
	if (!G)
		return;
	while(b < be)
		if ((U = (b++)->U) && (i = U->nintv)) {
			lap = U->lap;
			lape = lap + i;
			while(lap < lape)
				if ((t = Adjoints[(la = *lap++)->v->a])){
					Adjoints[la->v->a] = 0;
					og = la->nz;
					do Adjoints[og->varno] +=
							t*og->coef;
						while((og = og->next));
					}
			}

	vmi = 0;
	if (asl->i.vmap)
		vmi = get_vminv_ASL(a);
	if ((vscale = asl->i.vscale)) {
		gr = gr0;
		if (vmi)
			for(; gr; gr = gr->next) {
				i0 = gr->varno;
				Adjoints[i0] *= vscale[vmi[i0]];
				}
		else
			for(; gr; gr = gr->next) {
				i0 = gr->varno;
				Adjoints[i0] *= vscale[i0];
				}
		}
	gr = gr0;
	i0 = 0;
	switch(asl->i.congrd_mode) {
	  case 1:
		for(; gr; gr = gr->next)
			G[i0++] = Adjoints[gr->varno];
		break;
	  case 2:
		for(; gr; gr = gr->next)
			G[gr->goff] = Adjoints[gr->varno];
		break;
	  default:
		if (vmi) {
			for(; gr; gr = gr->next) {
				i = vmi[j = gr->varno];
				while(i0 < i)
					G[i0++] = 0;
				G[i] = Adjoints[j];
				i0 = i + 1;
				}
			}
		else
			for(; gr; gr = gr->next) {
				i = gr->varno;
				while(i0 < i)
					G[i0++] = 0;
				G[i] = Adjoints[i];
				i0 = i + 1;
				}
		i = n_var;
		while(i0 < i)
			G[i0++] = 0;
	  }
	err_jmp = 0;
	}

 static void
xpsgchk(ASL_pfgh *asl, ps_func *f0, int *xv, int n, int nx,
	real (*ev)(ASL *a, int i, real *X, fint *nerror),
	void (*gv)(ASL *a, int i, real *X, real *G, fint *nerror),
	real *y, int oxk)
{
	int i, i1, i2;
	ps_func *f;

	i1 = i2 = -1;
	for(i = 0; i < n; i++)
		if (y[i] != 0.) {
			if (i1 < 0)
				i1 = i;
			i2 = i;
			if (xv[i] != nx)
				(*ev)((ASL*)asl, i, Lastx, 0);
			f = f0 + i;
			if (f->ng && f->nxval != nx)
				(*gv)((ASL*)asl, i, Lastx, 0, 0);
			}
	if (i1 >= 0 && asl->i.Derrs) {
		asl->i.x_known = oxk;
		for(i = i1; i <= i2; i = i1) {
			i1 = i + 1;
			if (y[i]) {
				while(i1 <= i2 && y[i1])
					++i1;
				deriv_errchk_ASL((ASL*)asl, 0, i, i1-i);
				}
			}
		asl->i.x_known = 1;
		}
	}

 void
xpsg_check_ASL(ASL_pfgh *asl, int nobj, real *ow, real *y)
{
	int nx, oxk, *xv;
	ps_func *f;
	real *x;

	if (x0kind == ASL_first_x) {
		if (!(x = X0))
			memset(x = Lastx, 0, n_var*sizeof(real));
		xp_check_ASL(asl, x);
		}
	nx = asl->i.nxval;
	oxk = asl->i.x_known;
	asl->i.x_known = 1;
	if (y)
		xpsgchk(asl, asl->P.cps, asl->i.ncxval, nlc,
			nx, conpival_ASL, conpgrd_ASL, y, oxk);
	f = asl->P.ops;
	xv = asl->i.noxval;
	if (nobj >= 0 && nobj < n_obj) {
		if (nobj >= nlo)
			goto done;
		if (ow) {
			ow += nobj;
			if (*ow == 0.)
				goto done;
			}
		if (xv[nobj] != nx)
			objpval_ASL((ASL*)asl, nobj, Lastx, 0);
		f += nobj;
		if (!f->ng)
			goto done;
		if (f->nxval != nx)
			objpgrd_ASL((ASL*)asl, nobj, Lastx, 0, 0);
		}
	else if (ow && nlo)
		xpsgchk(asl, f, xv, nlo,
			nx, objpval_ASL, objpgrd_ASL, ow, oxk);
 done:
	asl->i.x_known = oxk;
	}